Water-cooled furnace-door frame.



L. L. KNOX. WATER COOLED FURNAGB DOOR FRAME.

APPLICATION FILED AUG.4,.1911.

Patented sept. .16, i913 M "a Qmw.

' L. L. KNOX.

WATER OOOLED FURNAGB DOOR FRAME.

APPLIOATION FILED AUG. 4, 19141.

'Patented sept. 16,1913.

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e, To einem mex @Reese-.e e eem-ieee away, of one form of water cooled furnace door freine embedyim my invention. Fig. 2 is e section mi the line IL-H of Fig. l, Withportions broken awe Fig. 3 is e section en theA iregnlei line IL-III ef Fig. l. Fig. e is e. View similar iovlig. 1, with the walter circulating vpipes emited,

' and showing e medied'eensti'uction. Fig.

.5 is e. sect-ien en the line V-V of Fig. e,

5 and Fig. 6 is e. sectieii en the line VI-V of Fig. v

lily invention has relation efe-Wafer cooled fui-nece deer frames, and is designed to provide e. durable ieme Whieli can vlee eheeply and rapidly manufactured.

'A urthen object of my invention is to provide means of novel eliai'eeier for sup- Iglyin the weber er cooling Huid thereio m e iglnly ecient and economical men-' ner.

The nature of 'my invention will be best understood byi'eerenee to the.accompany ing drewings,'in which I haveQshQWn two preferred embedimeniethereof, and which will now bev described, it being remised that viii'ious chengee may be ma e in the iietnie of eenslriictonyend arrangement. of the peifte without depeiting from the .spint vsind seope of my invention, as defined in the appended claims.

In, the-drawings), the numerals 2 and 3 Adesignate .the two plete or sheet memliers of which my improve doei freine id prefer ably constructed. .These two platee orslieei membere are of complementan form. The

portions mei-Teef which eim the body of A he fi'n'me 'heve'their edges bent eutwainlly to 'famillie @enges i einde. lThe iienges 4. .on lillel beek plete eee eeper than the iaiiges e en the 'one plee, end fm'm the bling, the freni'. plete ie eet between they peelltion ef Leiters Patent.

' .lpyetilm ied ingest 4i, 19H. lSerial No. 842,339.

'iop of this opening' me brought tegel.

ie imm ille lop Well ,oi etch of the Vopening.

.directed spray openings 18.

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Eig.. 3. The abetting flanges are then riveted or otherwise secured io eacli other.

The leg-forming portions oi the *fi-ont plete es shown el ille lelt-lmnd side ef Fig.

The abutting flanges fi and il eiieml loim lirougheut the length el the lege.

@nimble Veriieel angle -stipel may be Hivetel to lie cereal 'ioeech etliei, these angle ewipe ferming gnides'or the usine-.l veitieel slid? ing loof (net shown). pleee or eliee; ere cuiJ @my eenti'elly et their lewe? peitieils to oim en ei'ciied opening il eoiespendiegg te lie doei' opening ef ehe ine nace, a. pei'iion of which is shown el'. i6; end the edge portions of elle sheets et the l and preferably Welded The l eii'ucture time formed, censisls el en upper, hollow bedy pension and Clepending eide legge ai each Side ef the opening' 8, with e let outer surface between the guide sfilis 'a' ever which elle vertically movable clee een elicle in being opened and Closed. f i

1 1. deeignees e Wetereupply pipe el? reletively smell diemeer, i'iniiietmg in iet nozzle 12 Within e. elieinlsei 13,' to the lowei' end ei which is @linee-lied eeii' pipe lilheving laterz/i1 brenehes'l. Fiezn each lee eral branch 15, e pipe leg 16 liegende imo the hollow 'upper portion of .iliegeoii freine stmieil'n'e. The two legs j`gee'e-preembly conneetecl a. short distance above he :ireliefl top of the opening 8 by e, curved pipe l? having therein e plurality of downwardly The pipe 17 latein sheet 3 before ille, two Dletee ei: e'is me assembled mil ner is elso' preferably pi'ovicled with a. leg 19,

extending downwerdly into each of the legs 0f vthe freine and having e. pluielity of eprey epenings 20, whereby waier may directed against the inner sides of the Wells of said opening.

2l designati-:outlet pipes leading iirom' elle intieme upper portion ef the interim' of the mme structure end' conneeteel the laterally exifencle branche@ 29. with en upwardly extending eel/let 'pipe This miele@ pipe 23 extens upwardly mie a. ehemheife cennecteclet its: lowers pennen l. lli;

with the chamber 13 and having an overliow pipe 25 near-its upper end, tcrn'iiiiat-ing in a downwardly extending' discharge leg 2G, arranged to discharge into a funnel 2i or other suitable waste receptacle. The pipe 2G is open to the atliiosphcrc, or vented at its upper end, and the chamber 2111 also has a ventpipe 28 connected to its upper end.

flu operation, the entire interior of the hollow frame structure .is kept illed with water disclni'igiged -troin the spray openings, the spray being` directed apaiinst those portions of the structure which are subject to the greatest heat. The heated water rises to the top of the structure and out to the pipes 21 and 22 and into the pipe 23. From the pipe 23, this heated water is discharged into the chamber 24., The incoming cold water discharged from the nozzle 12 of the pipe 11 acts as an injector to draw into the chamber 13 a portion of this water which is mixed with the incoming cold wa ter and returned to the structure through the pipes '14,' 15 and 16 for further circulation. -Any excess ot water in the chamber QAUWill be discharged at 2G. The hot air and steam rising from. the Water will escape through the upper ends of the pipes 2G and 28. f

' In the modification of my invention, shown in Figs. 4, 5 and (5, the upper' portion of the frame structure is provided with a rearwardly projecting extension 29 formed by bonding the plate 4, this extensionprojecting into the refractory arch 30 over the furnace door ropening and acting as a proter yor for said arch or roof. In this forni l have also shown the frame structure formed by the two plates or sheets, as having the forwardly, projecting hollow edge portions 3l, between which the door is ar ranged to slide and which act as guides for the door. 4I preferably provide another water discharge pipe 29 within the inward extension 29 and adapted to discharge water v against the inner wall of said extension.

This -pipe 20? is connected with the ,supply pipe 16.

My invention provides a furnace door frame which is simple and durable in4 its construction, and in which the cooling water is introduced iii a highly effective manner. It also provides means whereby the heated water, after circulating through the door,

is partially cooled and mixed with cooler watdr, and then returncdfor further circulation. y i' i lt will be obvious that various changes. can bemade .in the details ot construction and arrangement of the several parts, thus tiny tui-nace.structure may be formed in other ways noti described, the arrangement ot water circulating pipes -inay be varied, and various other changes may be 'made within the` .scope of my invention, as defined in the.appcnd.cd claims.

'hat I claim is:

1. 'furnace door frame whose body p0rtion is formed ot two sheet metal plates, cach ol" said plates having its edges bent 'forwardly at. substantially right angles' to the Hat portions of the plates, the flanges on the rear plate being deeper than those on the front plate, and the't'ront plate sitting between said deeper flanges with its own flanges parallel with and secured to the deeper flanges, and the le(r portions of the' foune at the sides ot the door opening beforrned by extensions ot' said plates, the said extensions of the two plat-es being united to each other by cont-inuations of the said tianges,and also by joints at the corners ofthe legs diagonally Iopposite the said flanges; substantially as described.

l 2. In a furnace, the coml'iination with a hollow water cooled door framohaving a. water inlet pipe and a water discharge pipe,

of'ineans for mixing the water delivered by the discharge pipe with the incoming water ot the supp y pipe and returning the same to the said door frame, substantially as described.

3. InA a furnace, a hollow Water cooled door frame having a supply pipe and a dis charge pipe, a chamber into which the dis-V charge pipe extends, a chamber into which the supply pipe extends, and a connection between the said chambers; substantially as described.

4. In a furnace, a water cooled door frame having a supply pipe and a discharge pipe, the supply pipe having a jet nozzle, a chamber into which the jet nozzlel discharges, an inlet pipe leading from said chamber to the water cooled door frame, a chamber into which the outlet pipe discharges, and a con-A nection between the two chambers; substanizo pipe extending transversely within thev structure adjacent to the arch-wall` thereof and arranged to directjets of water downwardlvagainst` the same, and supply pipes` extending to both ends of said pipe; substantially as described. i

7. A` furnace door freine comprisinga' hollow sti-notare having an. arched 'door struture adjacent to the' arch-wall thereof and arranged to direct jetso Water downother pipes connected withthe supply pipes f,

Wardly against the same, and supply pipes extending to both ends of said ipe, and

and extending downwardly withm the leg portions of the structure,` et opposite sides of said openlng; substantially as described. 10 In testimony whereof I have hereunto set my hand.. I

y LUTHER L. KNOX. Witnesses: l 

